1020222121 has 8 divisors (see below), whose sum is σ = 1055001600. Its totient is φ = 985559520.

The previous prime is 1020222097. The next prime is 1020222143. The reversal of 1020222121 is 1212220201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020222121 - 2⁵ = 1020222089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020222521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11281 + ... + 46558.

It is an arithmetic number, because the mean of its divisors is an integer number (131875200).

Almost surely, 2^1020222121 is an apocalyptic number.

It is an amenable number.

1020222121 is a deficient number, since it is larger than the sum of its proper divisors (34779479).

1020222121 is an equidigital number, since it uses as much as digits as its factorization.

1020222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58439.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1020222121 is about 31940.9160951905. The cubic root of 1020222121 is about 1006.6957735518.

Adding to 1020222121 its reverse (1212220201), we get a palindrome (2232442322).

It can be divided in two parts, 10202 and 22121, that added together give a palindrome (32323).

The spelling of 1020222121 in words is "one billion, twenty million, two hundred twenty-two thousand, one hundred twenty-one".